Alpha
Alpha seal kit 740 for DHW heat exchanger repair 6.1000740
Genuine Alpha seal kit 740, for repair or replacement of the DHW heat exchanger on the Alpha 240 and 280 boilers, part number 6.1000740.
At a glance
- Also known as 1250819
- Fitting should be carried out or checked by a Gas Safe registered engineer
£48.12
£40.10 ex. VAT · VAT at 20%
Same-day dispatch
Ordered by 4pm Mon–Fri, 10:30am Sat.
30-day returns
Unused, in original packaging.
What it is
Alpha seal kit 740 is the repair/replacement seal kit for the domestic hot water (DHW) heat exchanger on the Alpha 240 and 280 boilers, providing the seals needed to service the DHW heat exchanger and associated pump connections. It is a genuine Alpha part, number 6.1000740.
Signs this part needs replacing
- Reduced or fluctuating hot water temperature
- Water leaking around the DHW heat exchanger or its connections
- Kettling or banging noises linked to limescale in the exchanger
- DHW heat exchanger removed for servicing with the old seals damaged
Before you order
- Match this part number against the seal kit fitted to your boiler
- Isolate and drain the relevant circuit before starting work
- Fitting should be carried out or checked by a Gas Safe registered engineer
Compliance
| GC number | 343-709 |
|---|---|
| Alternative numbers | SEAL-KIT-740-HEAT-EXCHSPUMP-240280, 1250819 |
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| ALPHA 240 | 47-532-04 | 47-532-04 | — | — |
| ALPHA 240 ECO | 47-532-05 | 47-532-05 | — | — |
| ALPHA 240E | 47-532-06 | 47-532-06 | — | — |
| ALPHA 240E (LPG) | — | — | — | |
| ALPHA 240P | 47-532-09 | 47-532-09 | — | — |
| ALPHA 240X | 47-532-13 | 47-532-13 | — | — |
| ALPHA 240XE | 47-532-11 | 47-532-11 | — | — |
| ALPHA 240XP | 47-532-10 | 47-532-10 | — | — |
| ALPHA 280E | 47-532-08 | 47-532-08 | — | — |
| ALPHA 280E (LPG) | — | — | — |
Showing 10 of 20 compatible appliances.
Documents & drawings
Everything we hold for this part. Where a document exists but we don't hold it, the technical team will source it from the manufacturer — usually the same working day.
ALPHA appliance manual — 240 (GC 47-532-04), 240E (GC 47-532-06), 240E (LPG), 240P (GC 47-532-09), 280E (GC 47-532-08), 280E (LPG), 280P (GC 47-532-12)
manualmanualALPHA appliance manual — 240 ECO (GC 47-532-05)
manualmanualALPHA appliance manual — 240X (GC 47-532-13)
manualmanualALPHA appliance manual — 240XE (GC 47-532-11), 240XP (GC 47-532-10)
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